The coast of Namibia is one of three places on Earth with persistent low-level clouds, and the only such location with a steady supply of tiny aerosol particles in the form of smoke from inland fires that mix with the clouds. NASA's Observations of Aerosols Above Clouds and their Interactions (ORACLES) mission will observe and measure how these particles interact with clouds and change their ability to warm or cool the planet. [Source: NASA Climate Change News]